SimplifyCFG: don't remove unreachable default switch destinations

[oota-llvm.git] / lib / Transforms / Utils / CloneModule.cpp

diff --git a/lib/Transforms/Utils/CloneModule.cpp b/lib/Transforms/Utils/CloneModule.cpp
index 1046c38ec01d534cb6a2499148fcafe7b4483d1e..fae9ff5bce0f35563d9d6b54a51270625dad7238 100644 (file)
--- a/lib/Transforms/Utils/CloneModule.cpp
+++ b/lib/Transforms/Utils/CloneModule.cpp
@@ -13,11 +13,11 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Utils/Cloning.h"
-#include "llvm/Module.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/TypeSymbolTable.h"
-#include "llvm/Constant.h"
+#include "llvm/IR/Constant.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Module.h"
 #include "llvm/Transforms/Utils/ValueMapper.h"
+#include "llvm-c/Core.h"
 using namespace llvm;
 
 /// CloneModule - Return an exact copy of the specified module.  This is not as
@@ -32,24 +32,13 @@ Module *llvm::CloneModule(const Module *M) {
   return CloneModule(M, VMap);
 }
 
-Module *llvm::CloneModule(const Module *M,
-                          ValueToValueMapTy &VMap) {
-  // First off, we need to create the new module...
+Module *llvm::CloneModule(const Module *M, ValueToValueMapTy &VMap) {
+  // First off, we need to create the new module.
   Module *New = new Module(M->getModuleIdentifier(), M->getContext());
   New->setDataLayout(M->getDataLayout());
   New->setTargetTriple(M->getTargetTriple());
   New->setModuleInlineAsm(M->getModuleInlineAsm());
-
-  // Copy all of the type symbol table entries over.
-  const TypeSymbolTable &TST = M->getTypeSymbolTable();
-  for (TypeSymbolTable::const_iterator TI = TST.begin(), TE = TST.end(); 
-       TI != TE; ++TI)
-    New->addTypeName(TI->first, TI->second);
-  
-  // Copy all of the dependent libraries over.
-  for (Module::lib_iterator I = M->lib_begin(), E = M->lib_end(); I != E; ++I)
-    New->addLibrary(*I);
-
+   
   // Loop over all of the global variables, making corresponding globals in the
   // new module.  Here we add them to the VMap and to the new Module.  We
   // don't worry about attributes or initializers, they will come later.
@@ -58,10 +47,12 @@ Module *llvm::CloneModule(const Module *M,
        I != E; ++I) {
     GlobalVariable *GV = new GlobalVariable(*New, 
                                             I->getType()->getElementType(),
-                                            false,
-                                            GlobalValue::ExternalLinkage, 0,
-                                            I->getName());
-    GV->setAlignment(I->getAlignment());
+                                            I->isConstant(), I->getLinkage(),
+                                            (Constant*) nullptr, I->getName(),
+                                            (GlobalVariable*) nullptr,
+                                            I->getThreadLocalMode(),
+                                            I->getType()->getAddressSpace());
+    GV->copyAttributesFrom(I);
     VMap[I] = GV;
   }
 
@@ -69,16 +60,21 @@ Module *llvm::CloneModule(const Module *M,
   for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) {
     Function *NF =
       Function::Create(cast<FunctionType>(I->getType()->getElementType()),
-                       GlobalValue::ExternalLinkage, I->getName(), New);
+                       I->getLinkage(), I->getName(), New);
     NF->copyAttributesFrom(I);
     VMap[I] = NF;
   }
 
   // Loop over the aliases in the module
   for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end();
-       I != E; ++I)
-    VMap[I] = new GlobalAlias(I->getType(), GlobalAlias::ExternalLinkage,
-                                  I->getName(), NULL, New);
+       I != E; ++I) {
+    auto *PTy = cast<PointerType>(I->getType());
+    auto *GA =
+        GlobalAlias::create(PTy->getElementType(), PTy->getAddressSpace(),
+                            I->getLinkage(), I->getName(), New);
+    GA->copyAttributesFrom(I);
+    VMap[I] = GA;
+  }
   
   // Now that all of the things that global variable initializer can refer to
   // have been created, loop through and copy the global variable referrers
@@ -88,11 +84,7 @@ Module *llvm::CloneModule(const Module *M,
        I != E; ++I) {
     GlobalVariable *GV = cast<GlobalVariable>(VMap[I]);
     if (I->hasInitializer())
-      GV->setInitializer(cast<Constant>(MapValue(I->getInitializer(),
-                                                 VMap, RF_None)));
-    GV->setLinkage(I->getLinkage());
-    GV->setThreadLocal(I->isThreadLocal());
-    GV->setConstant(I->isConstant());
+      GV->setInitializer(MapValue(I->getInitializer(), VMap));
   }
 
   // Similarly, copy over function bodies now...
@@ -110,17 +102,14 @@ Module *llvm::CloneModule(const Module *M,
       SmallVector<ReturnInst*, 8> Returns;  // Ignore returns cloned.
       CloneFunctionInto(F, I, VMap, /*ModuleLevelChanges=*/true, Returns);
     }
-
-    F->setLinkage(I->getLinkage());
   }
 
   // And aliases
   for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end();
        I != E; ++I) {
     GlobalAlias *GA = cast<GlobalAlias>(VMap[I]);
-    GA->setLinkage(I->getLinkage());
-    if (const Constant* C = I->getAliasee())
-      GA->setAliasee(cast<Constant>(MapValue(C, VMap, RF_None)));
+    if (const Constant *C = I->getAliasee())
+      GA->setAliasee(MapValue(C, VMap));
   }
 
   // And named metadata....
@@ -129,9 +118,16 @@ Module *llvm::CloneModule(const Module *M,
     const NamedMDNode &NMD = *I;
     NamedMDNode *NewNMD = New->getOrInsertNamedMetadata(NMD.getName());
     for (unsigned i = 0, e = NMD.getNumOperands(); i != e; ++i)
-      NewNMD->addOperand(cast<MDNode>(MapValue(NMD.getOperand(i), VMap,
-                                               RF_None)));
+      NewNMD->addOperand(MapMetadata(NMD.getOperand(i), VMap));
   }
 
   return New;
 }
+
+extern "C" {
+
+LLVMModuleRef LLVMCloneModule(LLVMModuleRef M) {
+  return wrap(CloneModule(unwrap(M)));
+}
+
+}